Muffler.



E. C. RODWIGK.

MUI'PLBR.

APPLICATION PILBD'MAR. z3, 1912.

Patented sept. 15, 1914.

JNVENTOR www UNITED sir-naiss [rn vrrr ernten.

niaNEsT c. nonwicx, or xrnmfcanrronnre.

Murrnna.

Specification of Letters Patent.

lPatented Sept. 15, 1914i Application iled March, 1912. Serial No. 685,663.

To 'all whom it may concern.'

Be it known that I, Ennnsr C. Ronwicn, a citizen' of the United States, residing at Ukiah, in the 'county of Mendocino and l Stateof California, have invented new 'and luseful Improvementsin' hlufflers, of which the following isla specification.

This invention relates to muiilers and j more particularly toa mute exhaust which can be applied to gas or steamengines.

The primary object of this invention is to provide a device of this character which is to be applied to the end of an exhaust pipe -whereby when the exhaust gases come in Ywhich can be readily operated by the exhaust. 'i

With the foregoing` and other objects in View this invention consists of a novel conlstruction, combination, formation and arrangement of parts as'will be hereinafter of the drawings to facilitate and permit a,

more fully described, claimed and particularly pointed out in the drawings, in which,

Figure 1 is a side'elevation of my iinproved muffler showing the parts thereof assembled. Fig. 2 is a verticalvlongitudinal section of the same. Fig. 3 is a side elevation of the innertube having the outer chamber removed therefrom, and 'l `ig, 4, is a section taken on the line 4, 4, of the Fig. Q in the direction of the arrows as shown.

Referring now to the drawings wherein like' references indicate similar parts throughout the several views, the letter denotes* generally my improved mufller which isapplied to the end of an exhaust pipe B in the usual well known manner. This muffler consists of an inner cylindrical jacketwhich is preferably made of three sections 10,v 11 -and 12, these three sectlons being detachably securedv together by means of threads 13 as more clearly shown in Fig. 2

Vdetachment of the inner cylindrical casing` in -casethe interior mechanism contained therein should for any reason become inoperative or yout of order. The first section 10 is provided witlrthe threaded aperture .1-1 te receive the exhaust pipe B and journaled within the sections 10 and 12 is the convoluted cylindrical wheel 15 which also lies within the center section 1 1 and its purpose will be hereinafter more lfully described. The wheel 15 is mounted in preferably ball bearing journals 16 which are mounted within each of the end sections 10 and 1Q by means of radially extending arms 17. This convoluted wheel l5 is provided with radi-J ally extending blades 18 which are bent inwardly at their extremities as at 19 and lie 'at an angle to the axis of the wheel.

The central -section 10 is provided with :i plurality of elongated slots 2O through which the gases exhaust into the chamber 21, which is formed by the cylindrical casing This cylindrical casing is spaced from the inner jacket by, means of radially cx tending arms 23 which are formed upon the members 10 and 12. The usual oil cups 24 are provided in each of the members 1G and 12 whereby suitable supplyofoil will be 'furnished to the ball bearings, thereby facilitating the rotation. of 'the convolutedwheel 15, Y l A,

It is apparent from'. theaforesaid construction that when the gases in the exhaust pipe enter within the chamber formed in the section l() they come in Contact with the convoluted wheel 15- thereby forcing the gas through the exit portion 12' of the inner jacket and also'through the elongated slots formed within the central portion, thereby l throwing the gases into a divided state and breaking up and suppressing the objectionable noises from the exhaust of englnes.

t is obvious from the foregoing construc- A tion taken in connection withthe drawings I' that l' have provided openings for thescape of the exhaust in the muler of greaten'size .than the exhaust or intake pipeof the/ muffler. This will relieve any back pressure ofthe engine without lessening the power of the same and at the Sametime give suiiicient pressure to revolve the Aconvoluted wheel whereby the rotation ofthe same will'lcoinpel the exhaust to escape" in the 'atmosphere in a divided state'thereby eliminating the objectionable noises, iliade by the differenti gas and steam engines now in use. l

lt will be' seen from the foregoing description that l have constructed a device which 

